When dealing with newer then 2860 cards afaik there is no stable mainline kernel support (I hope it is the correct term)
2010/11/17 David Ronkin <dron...@gmail.com> > Hi > > I bought Edimax EW-7711USN usb adapter (with linux support written on the > box). > Looks like the driver is found by my ubuntu 10.10 Maverick (on titan laptop) > but still i cannot go to web (i have open wireless nw around) - getting the > error below. > > try to : 1) blacklist the rta2870sta and use rt2800usb or rt2x00 2) switch to compat-wireless (it solved my problems). I googled for some time but gave up meanwhile, > Please kindly help! > > Could you also replay with : if you have wpa2 enc ap try to kill network manager (if it is on) and start the plain old wpa_supplicant with debug values when connecting and provide us the logs. wlist wlan1 scan tail /var/log/syslog after you connected the card to the system and did and iwconfig. Here some logs: > > # lshw | grep wire > *-firewire > product: Firewire (IEEE 1394) > configuration: driver=firewire_ohci latency=32 > capabilities: ethernet physical wireless > configuration: broadcast=yes driver=rt73usb > driverversion=2.6.35-22-generic firmware=N/A link=no multicast=yes > wireless=IEEE 802.11bg > capabilities: ethernet physical wireless > configuration: broadcast=yes multicast=yes wireless=Ralink STA > > #iwconfig wlan1 essid Homek > > #iwconfig > > wlan1 Ralink STA ESSID:"" Nickname:"RT2870STA" > Mode:Auto Frequency=2.412 GHz Access Point: Not-Associated > Bit Rate:1 Mb/s > RTS thr:off Fragment thr:off > Encryption key:off > Link Quality=10/100 Signal level:0 dBm Noise level:-115 dBm > Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 > Tx excessive retries:0 Invalid misc:0 Missed beacon:0 > > > # dhclient wlan1 > Internet Systems Consortium DHCP Client V3.1.3 > Copyright 2004-2009 Internet Systems Consortium. > All rights reserved. > For info, please visit https://www.isc.org/software/dhcp/ > > Listening on LPF/wlan1/00:1f:1f:c7:16:53 > Sending on LPF/wlan1/00:1f:1f:c7:16:53 > Sending on Socket/fallback > [snip] > You should be sure that you wore able to auth againgst the ap prior to calling dhcpclient > DHCPDISCOVER on wlan1 to 255.255.255.255 port 67 interval 7 > > I talked about a card with the same chip on AP10 with some people and all had the same results it basically overheats , crashes get stuck and don't work.
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